Amadivayisi amancane futhi asebenza kahle kakhuluama-laser
Abacwaningi be-Rensselaer Polytechnic Institute badale i-idivayisi ye-laserlokho kungububanzi bezinwele zomuntu kuphela, okuzosiza izazi zesayensi ukutadisha izakhiwo eziyisisekelo zezinto nokukhanya. Umsebenzi wazo, oshicilelwe emaphephabhukwini esayensi adumile, ungasiza futhi ekuthuthukiseni ama-laser asebenza kahle kakhulu okusetshenziswa emikhakheni ehlukahlukene kusukela kwezokwelapha kuya ekukhiqizeni.
Ii-laseridivayisi yenziwe ngento ekhethekile ebizwa ngokuthi i-photonic topological insulator. Ama-photonic topological insulators ayakwazi ukuqondisa ama-photon (amagagasi nezinhlayiya ezenza ukukhanya) ngokusebenzisa izixhumanisi ezikhethekile ngaphakathi kwezinto, kuyilapho evimbela lezi zinhlayiya ukuthi zingasakazeki ezintweni ngokwazo. Ngenxa yalesi sici, ama-topological insulators avumela ama-photon amaningi ukuthi asebenze ndawonye iyonke. Lawa madivayisi angasetshenziswa futhi njenge-topological "quantum simulators," okuvumela abacwaningi ukuthi batadishe izenzakalo ze-quantum - imithetho yemvelo elawula izinto ngezikali ezincane kakhulu - kuma-mini-lab.
"I-i-photonic topologicalIsivikelo esasenza siyingqayizivele. Sisebenza ekushiseni kwegumbi. Lokhu kuyintuthuko enkulu. Ngaphambilini, izifundo ezinjalo bezingenziwa kuphela kusetshenziswa imishini emikhulu, ebizayo ukupholisa izinto endaweni evalekile. Ama-LABS amaningi ocwaningo awanalo lolu hlobo lwemishini, ngakho-ke idivayisi yethu yenza abantu abaningi bakwazi ukwenza lolu hlobo locwaningo lwefiziksi oluyisisekelo elabhorethri, “kusho uprofesa osizayo we-Rensselaer Polytechnic Institute (RPI) eMnyangweni Wezesayensi Yezinto Nobunjiniyela kanye nombhali omkhulu walolu cwaningo. Ucwaningo belunosayizi omncane wesampula, kodwa imiphumela iphakamisa ukuthi umuthi omusha ubonise ukusebenza kahle okukhulu ekwelapheni lesi sifo esingavamile sofuzo. Silangazelela ukuqinisekisa le miphumela ezivivinyweni zezokwelapha zesikhathi esizayo futhi okungenzeka kuholele ezindleleni ezintsha zokwelapha iziguli ezinalesi sifo.” Nakuba ubukhulu besampula bocwaningo babubuncane kakhulu, okutholakele kusikisela ukuthi lo muthi omusha ubonise ukusebenza kahle okukhulu ekwelapheni lesi sifo esingavamile sofuzo. Silangazelela ukuqinisekisa le miphumela ezivivinyweni zezokwelapha zesikhathi esizayo futhi okungenzeka kuholele ezindleleni ezintsha zokwelapha iziguli ezinalesi sifo.”
“Lokhu futhi kuyisinyathelo esikhulu esiya phambili ekuthuthukisweni kwama-laser ngoba umkhawulo wedivayisi yethu yokushisa kwegumbi (inani lamandla adingekayo ukuze isebenze) uphansi ngokuphindwe kasikhombisa kunamadivayisi e-cryogenic angaphambilini,” kusho abacwaningi. Abacwaningi be-Rensselaer Polytechnic Institute basebenzise inqubo efanayo esetshenziswa imboni ye-semiconductor ukwenza ama-microchip ukudala idivayisi yabo entsha, ehilela ukuhlanganisa izinhlobo ezahlukene zezinto ungqimba ngengqimba, kusukela ezingeni le-athomu kuya ezingeni lama-molecule, ukudala izakhiwo ezifanele ezinezakhiwo ezithile.
Ukwenzaidivayisi ye-laser, abacwaningi bakhulisa amapuleti amancane kakhulu e-selenide halide (ikristalu eyenziwe nge-cesium, i-lead kanye ne-chlorine) futhi baqopha ama-polymer anephethini kuwo. Bahlanganisa la mapuleti ekristalu kanye nama-polymer phakathi kwezinto ezahlukahlukene ze-oxide, okwaholela entweni engaba ama-micron amabili ubukhulu kanye nama-micron ayi-100 ubude nobubanzi (ububanzi obumaphakathi bezinwele zomuntu bungama-micron ayi-100).
Lapho abacwaningi bekhanyisa i-laser kudivayisi ye-laser, kwavela iphethini kanxantathu okhanyayo esibonakalayo sokuklama izinto. Iphethini inqunywa ukwakheka kwedivayisi futhi ingumphumela wezimpawu ze-topological ze-laser. “Ukukwazi ukufunda izenzakalo ze-quantum ekushiseni kwegumbi kuyinto ethokozisayo. Umsebenzi kaProfesa Bao omusha ukhombisa ukuthi ubunjiniyela bezinto bungasisiza siphendule eminye yemibuzo emikhulu kwezesayensi.” kusho umphathi wobunjiniyela we-Rensselaer Polytechnic Institute.
Isikhathi sokuthunyelwe: Julayi-01-2024